The Erica Synths Pico VCA2 is a compact voltage controlled amplifier module that is based on the reliable AS3330 chip. It is an improved version of the original Pico VCA, with the addition of manual bias adjustment for the top VCA. The module features two independent VCAs with a linear response, making it a versatile tool for controlling amplitude.
One of the standout features of the Pico VCA2 is the manual bias adjustment on the top VCA. This feature allows for full span vibrato effects, which can add a lot of depth and character to a patch. The bias control allows for fine-tuning of the VCA's response, giving the user a high level of control over the sound.
In addition to the improved bias control, the Pico VCA2 also boasts input normalling, DC coupling, input protection against overvoltage, and protection against reverse PSU connection. These features ensure that the module is both reliable and safe to use, protecting both the module and the rest of the Eurorack system.
The two independent VCAs are a useful feature of the Pico VCA2, as they can be used separately or together, depending on the needs of the user. The audio and CV inputs of the first VCA are normaled to the second VCA, allowing for buffered audio splitting. The ability to use the VCAs for controlling amplitude of control voltage signals allows for even more creative possibilities.
The compact size of the Pico VCA2 is also a key selling point, making it a great addition to any Eurorack setup. Despite its small size, the module has a lot of features packed into it, and it can be a powerful tool for shaping the sound of a patch.
Overall, the Erica Synths Pico VCA2 is a versatile and reliable voltage controlled amplifier module that offers a high level of control over amplitude. Its compact size and improved bias control make it a great addition to any Eurorack setup.
Example Usage
If you're just starting out with the Erica Synths Pico VCA2, a simple way to use it would be to plug in an LFO (low frequency oscillator) into one of the audio inputs and an output cable into the corresponding output. Adjust the manual bias control to find a range of different amplitudes and try experimenting with the speed of the LFO to create some unique and rhythmic effects. By connecting a CV input to the other VCA, you can explore controlling the amplitude of your control signals. Have fun exploring the possibilities!
To add some creative movement to your synth patches, try patching an LFO signal into the CV input of the Erica Synths Pico VCA2's second channel while patching an audio signal into the first channel. Adjust the manual bias control on the top VCA until you achieve the desired amount of modulation. This will give you a vibrato effect on the audio signal, with the rate and depth of modulation determined by the LFO signal. Experiment with different waveforms and speeds to find the perfect amount of movement for your patch.
Further Thoughts
One creative use for the Erica Synths Pico VCA2 is to create glitchy percussion sounds by applying a fast LFO to the bias control of one of the VCAs while sending noise or short audio pulses to the other VCA. This will create unpredictable variations in the signal, resulting in unique and interesting percussive sounds that can add character to any track.